package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MemberSignature;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

/**
 * 自定义切面，实现公共字段自动填充
 *
 *
 */
@Aspect
@Component
@Slf4j

public class AutoFillAspect {
@Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void AutoFillPointCut(){}

    @Before("AutoFillPointCut()")
    public void autoFill(JoinPoint joinPoint){

        MethodSignature signature = (MethodSignature)joinPoint.getSignature();
        AutoFill annotation = signature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType = annotation.value();

        Object[] args=joinPoint.getArgs();
        if(args==null||args.length==0){
            return;
        }
        Object  entity=args[0];




        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();

if(operationType==OperationType.INSERT){
    try{
        Method setCreateTime=entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME,LocalDateTime.class);
        Method setUpdateTime=entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME,LocalDateTime.class);
        Method setCreateUser=entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER,Long.class);
        Method setUpdateUser=entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER,Long.class);


        setCreateTime.invoke(entity,now);
        setUpdateTime.invoke(entity,now);
        setCreateUser.invoke(entity,currentId);
        setUpdateUser.invoke(entity,currentId);

    }catch (Exception e){
        e.printStackTrace();
    }


}else if(operationType==OperationType.UPDATE){


    try{

        Method setUpdateTime=entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME,LocalDateTime.class);
        Method setUpdateUser=entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER,Long.class);

        setUpdateTime.invoke(entity,now);
        setUpdateUser.invoke(entity,currentId);

    }catch (Exception e){
        e.printStackTrace();
    }

        }



        log.info("开始自动填充{}",joinPoint);
    }



}
